Product Short Description
Product Brief Introduction
HID2082 is H-Series 18mm width dual-channel temperature signal conditioning barrier, dedicated for thermal measurement sensors in explosion hazardous areas. It accepts RTD, thermocouple and potentiometer inputs, linearizes temperature signals and outputs standard isolated 4–20mA/1–5V analog signals, with sensor breakage detection and SIL 2 safety certification for thermal process safety loopsPepperl+Fu…
Description
Core Technical Specifications
- Power Input: 24VDC bus powered 20.4–30V, reverse polarity protection
- Multi-Type Field Input Support:
- Thermocouple: Type B/E/J/K/N/R/S/T/L/TXK/TXKH/TXA, built-in cold junction compensation at field terminals
- RTD 2/3-wire PT100/PT1000, max single line lead resistance 50Ω
- Potentiometer: 0.1kΩ ~ 20kΩ resistance input
- Millivolt signal: -100mV ~ +100mV, input impedance ≥1MΩ
- Standard Output: 4–20mA sink/source selectable or 1–5V analog signal, dual independent output per channel for signal splitting
- Diagnosis Function: Thermocouple/RTD wire breakage & short-circuit detection, collective fault relay output
- Safety Standard: IEC 61508 SIL 2, Ex ia IIC T4 intrinsic safety certification for Zone 0/1/2
- Mechanical Size: 18(W) × 106(H) × 128(D) mm, identical dimension with HID2030SK for mixed layout
- Operating Temperature: -20°C ~ +60°C cabinet environment
Function & Performance Features
- Universal multi-sensor input compatibility, single module covers all common industrial temperature measurement sensors
- Built-in high-precision cold junction compensation eliminates external compensation box requirement for thermocouple loops
- Digital linearization algorithm corrects non-linear thermocouple temperature curve for high output accuracy
- Signal splitter capability: One temperature sensor input provides two fully isolated analog outputs for redundant control systems
- PACTware software configurable via USB adapter: Set sensor type, measurement range, output scaling, fault alarm threshold
- Galvanic isolation between Ex hazardous zone and safe cabinet, eliminates ground loop temperature measurement error
- Hot-pluggable design for maintenance without system shutdown
- Low thermal drift, long-term measurement stability for continuous thermal process monitoring
Working Principle
Field temperature sensor analog signal enters the Ex-isolated input circuit; internal high-resolution ADC converts raw temperature signal to digital value. MCU executes sensor linearization calculation and cold junction compensation algorithm. Processed digital temperature data is isolated via transformer isolation channel then converted back to standard 4–20mA/1–5V analog output for DCS/PLC. Constant impedance monitoring circuit detects open/short sensor wiring and activates fault contact output when abnormal impedance occurs. Intrinsic safety limiting circuits restrict maximum voltage/current transmitted to hazardous area to prevent ignition risk.
Material & Structural Characteristics
- Housing: UL94-V0 flame retardant black engineering plastic, chemical corrosion resistant
- Internal Circuit: High-isolation multi-layer PCB with reinforced insulation barrier, conformal coating for moisture resistance
- Terminals: Spring push-in tool-free wiring terminals, tin-nickel alloy conductive contacts anti-oxidation
- Modular DIN rail snap-fit structure, interlocking side latches for dense termination board installation
- Passive natural cooling, no fan components
Installation Requirements
- Install on standard 35mm DIN rail inside non-explosion control cabinet
- Compatible with Pepperl+Fuchs 16-position H-System termination base plate, pre-assembled system cables simplify wiring
- Separate Ex field sensor wiring and control-side signal wiring cable trays with minimum 5cm separation distance
- Cold junction compensation accuracy requires field terminals temperature consistent with ambient cabinet temperature; avoid direct air duct blowing on module terminals
- Protective earth connection to termination board ground terminal, independent intrinsic safety grounding circuit
- Max 64 isolation modules installable on single 16-channel termination base for high-density cabinet layout
Typical Application Scenarios
- Petrochemical reactor, distillation tower explosion-proof temperature monitoring loops
- Power plant boiler furnace thermocouple signal isolation & conditioning
- Chemical batch reactor SIS safety temperature interlock measurement
- Liquefied natural gas (LNG) storage tank RTD temperature detection
- Metallurgy furnace, heat treatment line hazardous area thermal signal transmission
- Food & beverage explosion-proof fermentation tank temperature monitoring
Operation & Maintenance Precautions
- Configuration via PACTware must be completed before connecting field hazardous zone sensors
- Thermocouple extension wire must match thermocouple type to avoid cold junction compensation error
- Do not mount modules near heating components (contactors, resistors) to prevent CJC temperature offset
- Annual calibration of measurement accuracy required for SIL 2 safety loop applications
- Disconnect 24VDC bus power before replacing damaged modules in live process systems
- Any internal circuit modification invalidates explosion protection certification
- In high humidity cabinet environment, install cabinet heater to prevent terminal condensation
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